ONE SEMI CUSTOM FRAME SIZE:

ONE SEMI CUSTOM FRAME SIZE:Multiple frame sizes means multiple tools right? Is there any need?I tool a design approach to find a solution and found some benifits.

WHY?Having one frame size means that I can have a monocoque carbon frame construction.Having one tool is more economical, but also allows to keep my manufacturing locally.Keeping it local means more control over the process.

HOW?This might not be possible on a road bike, however with mountain bikes, there have been a few developments...

SEAT TUBE SIZE - OUT THE WINDOW:Frame sizing have changed. MTBs were always sized on seat posts, however stack and reach are a much better method. With the invention of the dropper post this has be come more important. If you are tall in the torso then you need a longer reach. If you like to sit up a little then a taller stack and shorter reach is more important.The dropper post means that the seat-tube length is less important as the seat post can be dialed in at your handlebars.This is why I have gone for a set seat tube length.

THE LONG AND SHORT:By adjusting the Reach, and head-angle.I can create a geometry with 66 deg to suit Long Travel forks or 70 deg to suit Rigid forks.

TENSION SWING:The "swing-plates" tension the belt, but they also sling the gearbox under the frame.This allows the carbon to be almost continuous from head-tube to dropouts. The swing-plates can also be swapped out to adjust the bottom bracket height.

MODERN STANDARDS:142 maxles will be here for a while thanks to single-speeders and Roadies. The chainline does not change so even 27.5+ tyres run with no need to Boost44mm headset is conventional looking yet fits a fork with a tapered steerer.31.6mm seat tube gives plenty of seat tube options.